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An evaluation of the Coulter VCS differential counter.

Authors
  • Barnard, D F
  • Barnard, S A
  • Carter, A B
  • Patterson, K G
  • Yardumian, A
  • Machin, S J
Type
Published Article
Journal
Clinical and laboratory haematology
Publication Date
Jan 01, 1989
Volume
11
Issue
3
Pages
255–266
Identifiers
PMID: 2591156
Source
Medline
License
Unknown

Abstract

An evaluation of the Coulter VCS (volume, conductivity, light scatter) automated differential counter demonstrated satisfactory correlations with manual 800-cell differential counts for neutrophils, lymphocytes, monocytes and eosinophils. For the detection of abnormal cells, 12.2% of samples gave false-negative results on the VCS, and 13.4% gave false-positive results. However, only 0.8% of the false-negatives would be expected to be picked up by a standard 100-cell manual differential count. Carry-over accorded to manufacturer's specifications and throughput was 60 samples/h. Reference normal ranges have been established and the instrument's precision and performance with leucopenic and neonatal blood samples assessed.

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